// 父传子 children

function Son () {
    return (
      <div>
        <h1>this is son: { props.children }</h1>
      </div>
    )
  }
  
  function App () {
    // const name = "this is App";
    return (
      <div>
        <Son>
          <h1>this is App</h1>
        </Son>
      </div>
    )
  }
  export default App;